Spark arrester and consumer.



G. P. RODERICK.

SPARK AREESTER AND CONSUMER.

' APPLICATION FILED AUG. 3, 1911.

Q eeeeaeee i GSSGGQR Patented Apr. 9,1912.

SATES ATENT Erica.

SPARK ARRESTER Application filed August 3,

To all whom it may concern:

Be it known that I, GEORGE F. RODERICK, citizen of the United States, residing at Medina, North Dakota, have invented cer tain new and useful Improvements in Spark Arresters and Consumers, of which the following is a specification.

My present invention relates to improvements in spark catchers and consumers and has among others for its objects to provide a simple, durable and efiicient construction which may be produced at a moderate cost and readily applied to the ordinary boiler stack, and which may be easily manipulated by the engineer from his cab or other suitable point to enable the stack to discharge directly tothe atmosphere.

The invention includes the novel features of construction and arrangement and combination of parts hereinafter described and particularly defined by the appended claims.

A spark consumer constructed in accordance with my invention is illustrated in the accompanying drawings in which Figure 1 is a side elevation. Fig. 2 a horizontal cross section taken just above the deflector 12, Fig. 1. Fig. 3 is a vertical sectional view on the line 33 of Fig. 1.

Referring by reference characters to this drawing the numeral 1 designates the stack which is intended to be representative of that of the ordinary boiler, only the stack being here shown for convenience.

2 designates what I term a basin which is of annular trough shape and is designated to normally rest upon the top of the stack and catch the sparks which are caught and deflected downwardly by the crown.

Connected with the basin at their upper ends are a plurality of bars 3 which are capable of vertical movement on the outer face of the stack and have their lower ends pivotally connected to the extremities of the forked portion 45 of a lever 4 which lever has its fulcrum in the vertically extending arm 5 of a bracket 5 secured to the side of the stack. To the upper extremity of this arm 5 is pivoted the end 6 of a bell crank lever 6 which is connected by a link 7 with the outer end of the lever 4.

The free end of the bell crank lever is designed to be connected by an operating rod or cable with any convenient operating handle located within reach of the engineer in the cab (not shown) by which the Specification of Letters Patent.

trough or basin and with it the crown or AND CONSUMER.

Patented Apr. 9, 1912.

1911. Serial No. 642,079.

hood, may be raised to permit the stack to discharge directly to the atmosphere.

The action of gravity in returning the basin and crown to closed position may be assisted by a spring 8 extending between the bell crank lever and an eye 8 secured to the stack. The bars 3 are connected by a ring or band 3 which encircles and slides freely upon the stack.

In order to return to the stack the sparks which have been caught by the hood or crown I connect with the bottom of the trough or basin a plurality of pipes 9 preferably arranged in groups of three each, and each group unites at its lower end in a single larger pipe 10 which slides or telescopes within a pipe 11 fixed to the stack and having its lower inwardly turned end 11 communicating with the interior of the stack.

The inner edge of the basin is provided with an outwardly curved fender or deflector 12 which aids in catching and retaining the sparks in the trough.

The crown comprises outer and inner members, the outer member 18 being of inverted cup shape riveted or otherwise firmly secured at its lower edge to the basin and provided over its upper portion with a plu rality of holes 13 sufficient in number and size to alford free exit or descharge of the combustion gases.

The inner member 13 which is also of in verted cup shape, is imperfo-rate and is centrally secured to the top of the outer member so as to leave an annular space between the two, and within the inner member 13 is a deflector of inverted cone shape as indi cated at 15. Thus the products of combustion passing upward through the stack and striking against the cone shaped deflector and inner member are deflected downwardly, causing the sparks to be returned through the tube to the interior of the stack while the combustion gases pass underneath the edge of the lower or inner member and thence out through the openings in the upper or outer member.

If the engine be working hard and the draft increased the crown may be raised by the engineer to any desired extent thus allowing a partial exit of the combustion gases through the space between the basin and upper end of the stack. At the same time no sparks will escape as their momentum will carry them directly upward into the crown and after dropping into the trough escape therefrom through the central opening will be prevented by the defiector 12.

In order to lock the crown in any position to which it may have been adjusted and relieve the operating levers of strain I provide on the lever 4 a spring pressed pivoted dog which is designed to engage any one of a series of holes 17 of a bar 17.

The dog 16 is provided with an arm 16 to which is connected a cord 18 leading through eyes in the lever 6 which may be provided with anti friction pulleys, (not shown).

The cord is designed to be connected to the pull rope in such a manner that the first pull will operate the dog and subsequent movement operate the lever 6.

I prefer to extend the pipes 11 after passing through the openings 11 to a point below where the exhaust steam is delivered to the stack.

Having thus described my invention what I claim is 1. In combination with a smoke stack, an annular trough at the upper end thereof, means for elevating said trough away from but in line with the-upper end of the stack at will to provide free exit for the gases between the stack and trough, pipes connecting said trough with the lower portions of the stack and means above the trough for deflecting the sparks downwardly into the same.

2. In combination with a smoke stack, an annular trough seated on the upper end thereof, extensible pipes connecting said trough withthe lower part of the stack, a crown carried by said trough for deflecting the sparks downwardly into the trough, and means for raising the trough away from and in line with the upper end of the stack at will to provide a free exit for the gases.

3. In combination with a smoke stack, an annular trough at the upper end thereof, a plurality of sets of pipes connected at their upper ends with the bottom of the trough, each of said sets uniting at their lower ends in a single vertically disposed pipe, lower pipes telescopingly engaging said vertically disposed pipes, said lower pipes having their lower ends connected with the stack, means carried by the trough for deflecting sparks into the trough, means for elevating the trough away from the upper end of the stack at will to provide a free exit for the gases, and guiding means for retaining said trough at all times directly above the top of the stack.

4. In combination with a smoke stack, an annular trough at the upper end thereof, means carried by sald trough for deflecting sparks into the trough, extensible pipes con necting the trough with the lower part of the stack, arms depending from the trough on opposite sides of the stack, slidable connections between said arms and the stack for causing the trough in its vertical movement to be at all times directly above the top of the stack, a lever fulcrumed on a fixed support and having a forked portion embracing the stack and pivotally connected with said arms, and means for operating said lever whereby the trough may be lifted away from the stack to provide free exit for the gases.

5. In combination with a smoke stack an annular trough seated at the upper end thereof, means carried by said trough for deflecting sparks into the trough, extensible pipes connecting the trough with lower part of the stack and means for lifting said trough at will from the top of the stack to provide free exit for the gases, arms depending from the trough on opposite sides of the stack, guiding means for said arms for causing the trough to be at all times directly above the top of the stack, a lever fulcrumed on a fixed support and having a forked portion embracing the stack and pivot-ally connected with said arms, said lever provided with spring pressed pivoted dog designed to engage any of a series of holes in said fixed support, and an arm, to which is connected a cord attached to the pull rope, said dog cooperating with said lever.

In testimony whereof, I affix my signature in presence of two witnesses.

GEORGE F. RODERICK.

Witnesses:

THERESA I. NARUM, IV. E. DoTY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

